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Finding the Fourth Proportional to 158,645.40, 218,870.28 and 101,286.90

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Solution

The fourth proportional to 158,645.40, 218,870.28 and 101,286.90 is: 139,737.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,645.40 : 218,870.28 = 101,286.90 : x
  2. Step 2: Convert to fraction form
    158,645.40/218,870.28 = 101,286.90/x
  3. Step 3: Cross multiply
    158,645.40x = 218,870.28 × 101,286.90
  4. Step 4: Simplify right side
    158,645.40x = 22,168,692,163.33
  5. Step 5: Solve for x
    x = 22,168,692,163.33/158,645.40
  6. Step 6: Final answer
    x = 139,737.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.